SPECTROSCOPY OF QUASARS
AND COSMOLOGYAnalysis of physical conditions and chemical compositions
in absorbing material at large cosmological distances from absorption spectra
of quasars with large redshifts. In particular:

Search for molecular H2 clouds which existed in the early
epochs and played key role in formation of stars of the first generation.

Checking possible variation of fundamental physical constants during the
cosmological evolution as predicted by some modern theories
(multidimensional cosmologies of Kaluza-Klein type, the supersymmetic Grand
Unification theory, the supersstring theory).

PHYSICS OF NEUTRON
STARSStudies of internal structure and thermal evolution; thermal
emission from the atmospheres; evolution of magnetic fields; electrodynamics
and their magnetospheres; interpretation of multiwavelengh observations.